Valve for gas-engines.



B. M. ASLAKSON.

VALVE FOR GAS ENGINES.

APPLICATION FILED 001219, 1907.

Patented Nov. 1, 1910.

3 SHEETS-BHBBT 1.

INVENTDR WITNESSES:

B. M. ASLAKSON.

VALVE POR GAS ENGINES.

APPLIOATION FILED ooT.19,19o7.

Patented Nov. 1, 1910.

3 SHEETS-SHEET 2.

WITNESSES B. M. ASLAKSON.

VALVE FOR GAS ENGINES.

APPLICATION FILED 0013.19, 1907.

Patented Nov. 1,1910.

3 SHEETS-SHEET 3.

INVENTOR WITNESSES:

BAXTER M. ASLAKSON, OF SALEM, OHIO.

VALVE FOR GAS-ENGINES.

Specification of Letters Patent.

Patented Nov. 1, 1910.

Application illedvOctober 19, 1907. Serial No. $98,155.

To all whom 'it may concern:

Be it known that I, BAXTER M. AsLAKsoN, a citizen of the United States, and resident of Salem, in the county of Columbiana and State of Ohio, have invented certain new and useful Im rovements in Valves for Gas- Engines, o which the following is a specification.

My invention relates to valves for engines and is-especiall adapted for gas engines.

The object o my lnvention is to provide an inletvalve ofthe character-referred to, together with means for operating same, and the specification will set it' forth as it is constructed for use in an engine of the four cycle type, although it ma be utilized in connection with a two cyc e engine if desired. 4,

The invention consists in the novel construction described herein and pointed out in the claims, and comprises generally, a .casing in which is located a main valve which controls both an air and ay gas port Ply,

located in said casing, the valve operating to open first the air port to supply air, and then the gas port to supply gas, so that the air and gas are admitted together to the engine cylinder to `form the fuel charge.

'My' invention further comprises an automatic cut-0H valve lfor the gas and air supand which is located'within the mam valve-casing7 dispensed w1th in some cases Where the gas is governed by other mechanism, vand the engine still be operatedy with the main valve v construction only.

In the accompanying drawings forming part of this specicat1on,-Figure 1, isa view, partly in central vertical section,'of a valve construction embodying my invention. Fig. 2, is a central vertical section of the said valve construction, at right angles to the plane represented in Fig. 1. Fig. 3, is a viewi showing on a somewhat smaller scale, thei application of the valve and its operatingmeans to a as engine. Fig. 4, is a detail plan view o parts on the valve casing. Fig. 5, is a detail 'side view of certain parts of the valve operating means.

The main valve-casing A., is provided with two annular chambers a, and a,`communi eating with Athe air and gas conduits b and b respectively, in the casting B, which conduits lead res ectively from the source of air and gas supp y. 'In the case of a two cycle engine, the air and gasl should be under but this cut-ofi' valve may be A pressure in the conduits b and b', and may e under pressure in the operation of the rfour cycle engine ifdesired,l though not necessarily so. The casin A, is further provided with a central cy indrical bore A in which is slidingly fitted, a` cylindrical shell C, provided with ports C and C2, adapted to register with ports a2 and as respectively, in the casing to admit air and gas res ectively, to chamber D within the valve s ell C. Said shell C has a main-valve 0*,'10- cated at its lower end and formed integral therewith, which main-valve seats against the lower end of the casing A at A, thus presentin a single valve to effect closure etween t e interior of the engine cylinder, and the air and gas ports.

The casing A embodies a seat A, which is adapted to fit on the end of the cylinder' casting E of the engine (see Fig. 3), and to which casting said casing is fastened by means of bolts which are passed through the casing flange A4. OpeningsC8 in the shell C serve as ports for the passage of the fuel char e from the chamber D to the interior E o the engine cylinder, when the valve C* ,is open.

Mounted on the top of the casing A, and formin a closure for the chamber D, at this en is a casting F, which is bolted to the top of the casing and forms a housing and frame for the support of the valve levers, and is provided with a vhollow central projection F', in which is supported a vertical bearing ide F2, for the rod G connected at its ower' extremity to the valve C, projecting part serves as a pocket for the lower portion of a spring H, which por tion abuts against the recess bottom, while said spring at its upper end abutsagainst a washer-nut I, by means of which the tension of the sprin can be adjusted, said washernut bein he din its ad]usted position by a jam-nut which in turnvis jammed by the cap-nut K, Ythe said nutsvbeing all screwed to the upper end of -the valve-rod G, and the said spring serving to hold the main .valve in its proper position.

L, desi a'tes a bifurcated cam lever which is pivote a bearing-stud L', to the upper end of rod `M whichisoperated by an eccentricN, driven in timed relation with the engine. TheV cam lever L, rocks on the upper surface of the rocker arm O,

An annular groove or recess F3, in thev at one end Ltothe .frame F, on

and at its opposite end pivoted to the frame F at O', the lever L,

imparting to said rocker arm a movement vof constant amplitude," which movement isl transmitted to the valve-rod G through the 'bolt' P which is adjustably mounted in the rocker arm directly above the end of said valve-rod, and .whichmay be screwed up or down therein to eli'ect the ldegree of opening of the valve C4 and consequently of the ports C and C2.. i

It is obvious that the construction thus :t'arv described would be suicient to operate in connection with an engine, regardless of means for automatically controlling the quantity of air and gas further thanthus providedfor, if the engine 4was-to operate undera fairly constant oad so that ,the admission of gas andair could be controlled uby manually o erated valves, but where a fluctuating loa i'sto be incurred, I provide the automatic valve construction about to be described..- i

A hollow cylindrical valve Q is fitted to l snugly slide within the shell C oft-he main may travel over the valve C, the lower end of which valve Q orts C2 to limit the admission of gas toc amber D, said valve Q containing ports Q which are adapted to register with the ports C" and the upper ed-ges of which ports Q are adapted to serve as a cut olf forl the air, if carried far enough l relative t'o the ports C. The time/ of move- "connected" to one endffVZjoif' a bell-cran lever -V which is connectedto ther rocker arm' at .VC Thefoppo'siteend of the bellv ,Crank lever V is connectedY to' the rodsv W atW, andthe lower ends of the rods W are" connected tothe valve'Q at' W2. The throw of*l the eccentricN issuch as toactuate the openlng ofthe 4main valve C* a predetermined, degree, land the Vgears R2 `and T are geared'- to actuate -thebell-crank lever v'V to vmoveyin synchronism withthe 's'hell-casingl C` with the ports C hand Gtopen when .the v engi-'neus working upto .normal speed, butl should speed, thegovernor would force the ear s eeve the engine'v run 'faster than normal R2 into a lower position on the aft R', lthus advancing the movement of. vthe y -valve Q relative'to shell C, atan earlierA time thusv through ports gear NT, which kwould lower the cutting oflthe gases flowin C vand C2. The valves in Fgig. 2, are shown 1n their normal position when the engine is working at the redetermined speed, or the normal speed ofp under heavy load should run below the normal speed, the cut oil' valve closes the, portsA in the main valve at a later period, thus allowing more fuel to flow into the cylinder.

the engine. Itvv the engine It will be observed that the movement of the mainvalve in opening, )will lirst cause ports C and a2 to open', thus first opening the admission of the air to the cylinder of the engine. This serves to prevent back firing byinterposing a Vvcertain amount of. air between the exhausting gases, and the' new fuel charge. It will be also noted that thev gas ports close rst on the closing movement of the main' valve,l so that'the chamber :D i will be swept free from all fuel by air which will occupy the chamber D when the `fuel i charge is ignited in the cylinder of theengine, so that an explosion of gas in the fuel conduits, due to any leak in the main valve,

is impossible. This avoidance of explosion 4 in the fuel conduits, I consider an important feature of my construction. It will also be noted that the air and gas are mechanically mixed as they flow together through the openlngs C3, thus insuring complete combustion `in the cylinder, and that by my means of governing, I am enabled to cut oil the fuel mixture, and control the s eed -by the amount of the mixture admitte to the. cylinder.`

- The valve Q maybe set relative to the shell C byl means of adjusting `screws X held by lock nuts X-, which latter can be easily reached by removing the housing F from Casin A.

Having't us described my invention, what,

I claim as new and desire to secure by Lety ters Patent, is n p l n 1. A valve for gas engines comprising; a

vcylindrical 4casing opening into the, exploslonchamber of the engine embodying a4 central chamber and annularly dlsposed chambers in vcommunication with the air supply and gas supply respectively, and

havmg port'openings leading from the an-ynular chambers to the central chamber;J a

valver to close the said central chamber and` having walls rigidly mounted ony saidvalve toslide in contact with the walls vof, the cen'.-

tral chamber and in the path ofsaidlportfv openings, so disposedthat the port open-i,` ings into the 'annular chamber yconnected;4

with ythe gas supply are exposed'later than are the port openings connected with the air supply; a throttle'valve mounted within said i v ve comprisingfwalls adapted [to close the.

port openmgs 1n said val-ve; and suitable.- .a -v means lfor reciprocating the said valve" in' timed relation. with the engine; and suit-f v actuated means to change the poable speedsition of said throttle witliin said valve.y l -f Q A 'valve for gas engines comprising; a cylindrical casingopening into-'the explo- "openings lea ing from' the annular chambers to the centraly chamber; a cylindrical valve slidably fitted in said casing and provided with port openings to expose the said port openings in the casing, said openings in the valve so disposed that the openingsl leading to the air supply are exposed not later than the opening to the explosion chamber, and that the openings leading to the gas supply are exposed later than the said opening to the explosion chamber; a

throttle valve mounted Within said valve comprisin walls adapted to close the port openings 1n said valve; and suitable means for reciprocating the said valve in timed relation With the engine; and suitable speed actuated means to change the position of said throttle Within said valve.

A valve for gas engines comprising; a cylindrical casing opening into the explosion chamber of the engine embodying a central chamber and annularly disposed chambers in communication with the air supply Aand gas supply respectively, and having port openings leading from the annular chambers to the central chamber;l a cylindrical valve slidably fitted'insaid casing and provided with port openings to expose the said port openings in the casing, said first mentloned openings being of smaller dimensions than later said mentioned openings in the casing, s id openings in the valve being so disposed hat the openings leading to the air supply are exposed not later than the Iopening to the explosion chamber, and that the openings leading to the gas supply are vexposed later than the said opening to the explosion chamber; a throttle valve mounted within said valve comprising Walls adapted to close the port openings in said valve; and si'iitable' means for reciprocating the said valve in timed relation with the engine;

and suitable speed actuated means to change the .position of said throttle Within said f valve.v

4. A valve for gas engines comprising; a

cylindrical casing opening` into the'explo- 'sion chamber of the engine embodying a central chamber and annularly disposed vchambers in communication `with the air lin the valve soV disposed that the openings in the casing leading to the air supply are exposed simultaneously with the opening of 'than the ports in said Casin ings in said valve; and suitable means for reciprocating the said valve'in timed relation with t-he engine; and suitable speed actuated means to change the position of said throttle Within said valve.

Avalve for gas engines comprising; a cylindrical casing opening into the explosion chamber of the engine embodying a central chamber and annularly disposed chambers in communication with the air supply and gas supply respectively', and having port openings leading from the annular chambers to the central chamber; a valve consisting in an inverted open-ended cylinder, slidably mounted in said central chamber, the cylindrical wall being provided with port openings of predetermined size to move in the path of the port openings in said central chamber, said port openings in the valve being disposed in closer'relation whereby the ports to the air supply and t e ports to the gas supply are exposed successively; a throttle valve mounted within said valve comprising wallsadapted to close theport openin 1n said valve; and suitable means for reciprocating the said valve in timed relation with the engine; and suitable speed actuated means to chan e the position of said throttle within said va ve. I

6. A valve for gas engines comprising; a cylindrical casin opening into the explosion chamber of t e engine embodying a central chamber and annularly disposed 'chambers in communication with the air supply and gas supply respectively, and havingport openings leading from thel annular chambers to the centralchamber; a valve consisting in an inverted cylinder slidably* lico mounted in said centralchamber, the walls y of said cylinder being rforated to provide ports of predetermine size to `expose openings in said chamber and to o en into theV explosion chamber of the engine, the-said ports yin the valve being smaller'than the ports in the central chamber,-' and the ports leading into the explosion chamber being of an area equal to at least the combined area of the ports leading tothe airfand ply; a throttle va ve mounted wit in said valve comprising walls adapted to close the port openings in said valve; and suitabley means for reciprocating the said valve in timed relation with thev engine; and suitablespeed actuated means tochange the position of said throttle within said valve.

7. A valve for, gas engines comprising; a cylindrical casing openin into the explosion chamber of the engine embodying a central chamber `and annularly ydisposed chambers in communication with the air supply and gas supply respectivelyand having port openings leading from the annular chambers to the central chamber; a valve consisting in an inverted cylinder slidably mounted in said central chamber, the Walls of said cylinder being perforated to provide ports of redetermined size to ex ose the port openings in said chamber an to open into the explosion chalnber of the engine, the said ports in the valve being smaller than the ports in the central chamber, and so disposed that the openings leading to the air supply are exposed inadvance of the exposure of the openings leading to central chamber andannularly dlsposedA chambers in communication with the air supplyI and gas supply respectively; and having port openings leading from the annular chambersto the central chamber.; a cylindrical yvalve slidably fitted in said casing and provided with port openings to expose the said port openings 1n the casing, said openings in the valve so disposedthat the openings leading tothe air supply are exposed not later than the opening .to the explosion chamber, and that theopenings leading to the gas supply are exposed later than the said opening to the explosion chamber; a throttle valve consistin .in a cylinder slidably mounted in sai valve and adapted to move in unison with said 'valve and adapted to close the port openings in saidvalve; and suitable means for reciproeating the said valve in timed relation With `the engine; and suitable speed actuated means to chan e `the position of said throttle Within said Va ve.

9. A valve for gas engines comprising; a c lindrical casing openlng into the explosion chamber of the engine embodying a central chamber 'and annularly disposed cham bers in' communicationwiththe air supply andv gas supply respectively,' and having port openings leading from the .annular chambers to the central chamber; a cylindrical valve slidably fitted .in said casing and rovided lwith* port openings y in the cylinrical vvalls'to open intothe explosion chamber of the engine and expose said port openings inthe casing, sadopenings in the valve so disposed that the o enings in the casing 'leading .to the air supp y areA exposed simulf ably taneously with the opening of the port into the explosion chamber, and the openings 1n the casing leading to the gas supply are ex-A posed later than the said opening in the explosion chamber; a- 'cylindrical valve slidably fitted in said casing and provided With port openings to expose the said port openings in the casing `first mentioned opening being of smaller dimensions than the saidy later mentioned openings in the casing, said openings in the valve being so disposed that the openings leading to the airsupply-are exposed not later than the opening to theV explosion chamber, and that the openings` leading to the gas supply are exposed later than said opening to the 'explosion chamt ber; a throttle valve consisting in a cylinder slidably mounted in said valve and adapted to move in unison With said valve and adapted to close the port openings in said valve; and suitable means for reciprocating the said valve in timed relation with the engine; and suitable speed actuated means to change the position of said throttle within said valve.

l0.` A valve for gas engines comprising; a cylindrical casing opening into the explos1on chamber of theengine embodying a central chamber and annularly disposed chambers in communication with the air supply -and gas supply respectively, and having port openings leading from the annular chambers to the central chamber; a cylindrical valve slidably fitted ,in said casing j and provided with port openings in the cylindrical Walls to open into the explosion chamber of the engine, and to expose said port openings inthe casing, said openings in the valve so disposed that the openings in Vthe casing; leading to the air supply are exposed simultaneously with the opening of the port into the explosion chamber, and the openings in-the casing leading to the gas supply are exposed later than the saidopening to the explosion chamber; a throttle valv'e consisting in a cylinder slidably mounted in said valve and ada ted to move in unisonv with said valve an close the port openings in said valve; and

suitable means for reciprocating the saidy valve in timed relationwith the engine; and suitable speed actuated means to change the position of said throttle Within said valve;

11. A valve for gas engines comprising; a cylindrical casingopening into the explosion chambers in communication with the air supply and gas supply respectively,- but havmg port4 openings leading from the annular chambers to the central chamber; a valve consisting in an inverted o en ended cylinder slidadapted to a central" mounted in saidk central chamber, the

of said ,throttle within said va ve.

chamber, said port openings in the valve being disposed in closer relation than the ports in said casin whereby the ports to theair supply and t e ports to the gas rsu ply are exposed successivel a throttle valve consisting in a cylin er slidably mounted in said -valve anda apted to move in unison with` said valve and adaptedto close the port openings in said valve; and suitable means for reciprocating the' said valve in timed relation wththe engine; and suitable speed actuated means to chan e the position 12. A valve for gas engines comprising; a cilindrical casing opening into the explosion c amber of the engine embodyin a central chamber and annularly dispose chambers in `communication with the air supply and gas supply respectively, and having port openings leading from the annular chambers tothe central chamber; a valve consisting in an inverted cylinder slidably mounted in vsaid central chamber, the walls of said cylinder being perforated to provide ports of predetermined size to expose the port openings in said chamber and to open into the explosion ychamber of the engine, the said ports in the valve being smaller than the orts in the central chamber, and the ports eading into the explosion chamber being of l an area equal toat least the combined 'area of the ports leading to the gas and air supply; a throttle valve consisting in a cylinder slidably mounted in said valve and adapted to move in unison With said valve and adapted to close the port openings in said valve; and `suitable means for reciprocating the said valve in timed relation With the engine; and suitable speed actuated means to change the position ofsaid throttle Within said valve. L v

13. A valve for gas engines comprising; a'

cylindrical casing opening into the explosion ychamber of the engine embodying a central chamber -and annularly disposed chambers in communi yation with the air supplyandexplosioii chamber-ofthe engine, and said Y ports in the valve beingl smallerthan the ports in-=the central chamber, `and so disposed that the openings leading "to the air supply are exposed in advance of the exposure of the o enings leading to the gas supply; a thrott e valve consisting in a cyler slidably mounted insaid valve and ladapted to move in unison with said valve I es' and adapted to close the port openings in 'said valve; and suitable means for recipro-' 4chamber and annularly dispose ings in said chamber'and to open into thel the engine; and suitable speed actuated means tochan the position of said throttle within said va ve.

'1.4. valve for gas engines comprising; a cvlindrical casing opening into the explosion c amber of the engine embodyin a central I chambers in communication with the air supply and gas supply respectively, and havmg ort openings leadin from the annular cham ers tothe central c amber; a valve to close the .said central chamber and havin walls rigidly mounted on said valve to ide in contact with the wall of the central chamber and in the path of said port openings, so dis-y osed that the port openi s into the annuar chamber connected wit the gas supply are exposed later than are the port openings connected with the air supply; a throttle valve mounted within saidyalve comprising walls adapted to close the 4gaat openings in said valve; a rocking meii r connected to the said valve and to the la shaft of the engine to reciprocate the sai valve and comprising a suitable device to change the position of the said valve in thesaid chamber; a rocking member connected to the said throttle valve and to the lay' shaft of the' engine to reci rocate the said throttle valve and a suitab e device to change the position of the said valves relative to each other.

15. A valve for gas engines comprising; a cylinder opening direct to the explosion chamber of the en ine, and disposed to receive both air an gas supply and having ports therefor; a spring actuated puppet valve to close the passage from said cylinder o to the explosion chamber of the engine having rigidly attached thereto a slide valve to close t e ports leadin fromy the gas supply, saidslide valve so p aced that the port is exposed after the passage to the explosion chamber is opened; a lever to operate the said puppet and slide valves to open the passage to the explosion chamber o the engine in timed relation to the operation of the engine and through the connection of the said valves with an eccentric mounted upon a layshaft.

16. A valve for gas engines comprising; a'cylinder opening direct to the explosion chamber of the engine and' disposed to receive both air and gas supply and having ports therefor; a spring actuated pup eti valve to lclose the passage from said cy inder to the explosion chamber of the en ine having integrally formed therewith a s ide valve to close the ports leading -to the gas,

iis

supply in advance of the seating of the saidl valves With an eccentric mounted upon a lay-shaft.

17. A Valve for gas engines comprising; a one piece member having a circular, vertical, central opening and horizontally divided to form tWo separate annular chambers when the said central opening is filled, said chambers adapted t0 receive the air and gas supply separated; a one piece `member adapted. to fit Within the said central opening and having a cylindrical inner chamber to open directly into the lexplosion chamber .of the engine, and ports to communicate between the said inner chamber and the Said annular chamber, said member being provided With a valve seat at its open end opening into said explosion chamber; a spring actuated puppet valve to close said inner cylindrical chamber having a `valve stem vmounted in guides in the said member forming the cylindrical chamber, and further having rigidly connected a. slide valve to slide on the inner surface of the cylindrical .U

chamber to close the gas inlet ports in advance of the seating of the said puppet valve; a throttle valve to slide Within said slide valve to control the openiligof the gasl chamber port; a yoke attached to the said throttle valve passed out of said cylindrical chamber; a rocking member to engage the said yoke to reciprocate'the throttle valve,

said rocking member connected with the.v governor of the engine to be moved thereby;

a leverto operate the said-puppet and slide valves to open the passage to the explosion chamber of the engine in timed relation to the operation of the engine. and through the connection of the said valves With an eccentric mounted upon a lay-shaft. 

